Electronic Theses and Dissertation

Abstrak uji aktivitas antioksidan ekstrak kulit batang cassia alata dilakukan menggunakan 1,1-diphenyl-2-pycrilhydrazil 37,03 ppm. uji fitokimia pada ekstrak etil asetat kulit batang cassia alata mengandung senyawa golongan flavonoid, steroid, kumarin, fenol dan juga kuinon. ekstrak kasar etil asetat sebanyak 7 g dilakukan pemisahan menggunakan kromatografi kolom 60 50 dan eluen n-heksana : etil asetat berturut-turut ialah 166,08 ppm, 33,78 ppm, 55,39 ppm, 134,36 ppm, 48,70 ppm, 28,21 ppm, 29,63 ppm, 24,36 ppm, dan 41,98 ppm. 50 kata kunci: galinggang abstract the antioxidant activity test of cassia alata bark extract was performed using 1,1diphenyl-2-pycrilhydrazil value of 37,03 ppm. phytochemical test on ethyl acetate bark extract of cassia alata contained flavonoid, steroid, coumarin, phenol and quinone compounds. 7 g of ethyl acetate extract was carried out by using coloumn cromarography g 50 silica sationary gel phase and eluen n-hexane: ethyl acetate 50 60 value was 166,08 ppm, 33,78 ppm, 55,39 ppm, 134,36 ppm, 48,70 ppm, 28,21 ppm, 29,63 ppm, 24.36 ppm, and 41.98 ppm. key words: galinggang